Rotary screen and separator.



Patented Feb.24,1914

F. L. WALTER. ROTARY SCREEN AND SEPARATOR.

.APPLICATION FILED DBG. 14, 1912.

unirsi) STATES 1PATENT oFFieE.

FRANK L. WALTER, 0F WATERLOO, IOWA, ASSIGNOR T0 WILLIAIN'I WALTER, OF

' WATERLOO, IOWA.

ROTARY SCREEN AND SEPARATOR.

v Specification of Letters Patent.

Application led December 14, 1912.v Serial No. 736,753. l

To all who/m, it may concern.'

Be it known that I, FRANK L. WALTER, a citizen Vof the United States of America, and a resident of lVziterloo', Blackhawk county, Iowa, have invented certain new and useful improvements in Rotary Screens and Separators, of which the following is a specification.

My invention relates to improvements in corn shellers, and the object of my improvement is to more efficiently' remove the corn kernels fromthe cobs, break up the latter, separate each from the other, screen and deliver the various parts of the mixture to designated localities or into receptacles therefor. This object 1 have accomplished by the mechanism which is hereinafter described and claimed, and which is illustrated in the accompanying drawings, in which:

Figure 1 is a vertical longitudinal section through my said improved corn sheller except the oppositely-located corn and cob conveyers which are represented in elevation. Fig. 2 is a vertical transverse section through the double-cylinder net-ted screen, looking,- toward the delivery end thereof.

Similar numerals of reference denote corresponding parts throughout the several views.

My improved machine is supported 011 a suitable base and has its screeningand winnowing-mechanism inclosed in a hollow casing 18. it one end, hereafter designated as the forward end of said casing is a communicating hopper l of frust-al shape leading into an intermediate lesser frustal mill-casing 15, the latter having an open-'top chute 1G delivering into the interior of the casing 18. A vertical rotary shaft is seated centrally within the mill-casing` l5, and the inner walls of the latter may have rugosities to engage ears of corn although such rugosities are not here shown. Within the eas-ing 15 are a plurality of vertical vanes 6 attached to the shaft 5 and each bent forwardly somewhat in a spiral or helical manner at their lower ends. The outer edges of said varies approach the inner Walls of said mill-casing somewhat closely. On the top of said shaft 5 is a bevel-gear 4. driven by a bevel-pinion 3 on a horizontal sha-ft il, the latter being seated across the lower part of the hopper 1 in bearings in the weils thereof and projecting outwardly at both ends.'

One end of the shaft 2 has e belt'whl 9? opening; in the casing 18.

.driven by another pulley not shown on the mounted thereon which serves a means for communicating power to the machine from some source of power not shown. On the extreme forward end of said shaft is a smaller pulley 28 driving a belt 29, which latter is adapted to actuate proper mechanisni not shown driving a belt conveyer located in' a casing 34, On tlie other end of the .shaft Q is mounted a small pulley 30 carrying a belt 31 adapted to drive a pulley on the shaft of a fan-wheel Q5 seated in an Another belt 35 shaft of said. fan-wheel actuates a pulley on a shaft which rotates a fan-Wheel 23 Aalso seated in an opening in the casing` 18, but located at the lower rear part ofthe casing on one side. A belt 32 driven by a pulley not shown on the shaft of the last-mentioned fan-Wheel drives a pulley which actuates a conyeyer-belt in a ,casing 26 at the rearrend of the machine.

On the lower end of the shaft 5 is a bevelpinion 11 which drives a bevel-gear 12 on the forward end of a horizontal longitudinal shaft 13 which is located in a chamber under a partition -17 at the base of said easingr 18. Upon said shaft 13 is a conveyer in .theform of an Archimedian screw whose roar receiving end is under an opening in the partition 17 and under the rear delivery end of the double netteddrum 19-20. The latter drum is formed of concentric cylinders vof wire netting 19 and Q0, of which thel inner cylinder 20 extends to the rear beyond the outer cylinder 19. These drums are fixedly mounted eccentrically on an inclined rotary shaft l0 on spider-arms within the drums spaced from the ends thereof. The space between the two cylinders at their forward ends is closed by a solid head to prevent; regurgitation of .the substances emptied into the inner cylinder by the delivery chute 16 which extends into the holthe casing 26T The delivery-ends of the Inconveyers 34 and 26 arelocated at opposite 4./ ends of said machine, at a convenient height,

and adapted to deliver into any receptacle or carrier.

Operation of the machine: Ears of corn which are dumped into the hopper .l are csrried down past thel rotating vanes Gwhich4 g asp and rub them forcibly against the inner walls of th'e casing 1.5 and against each other, and since the caein` diminishes in width downwardly vthe ears are broken inte pieces so that a mingled mass of shelledv kernels, cob -fragments and chalI vis received by the chute 16. The fau-wheel over and near the forward end of the double-drums ltl-2tl sucks in the chatl' and4 carries it without the machine whence itmay be received in sacks or otherwise. The cob tragments and shelled corn enterthe inner drum 2t). Since these drums 1t) 2O are eccentri- 4cally mounted on the shaft l0, as shown best t all .shaken through the interstices of thenettings of the drums, while the larger and lighter cob fragments move out of the lnner drum to be received 1n the chute 24, and

thence carried 4through the hopper and con-v veyer 2o to a receptacle. Small fragments ot the cabs-which may have succeeded 1n passing the meshes ot `the drums are sucked up by the fan-wheel 23 and carried out ot" the casing,` 1S. Kernels which' pass the drums are received on the partition 17 whence they` slide and are pushed down through the opening at therear thereof kinto the receivinge,` end of theI screw-conveyer 4llt which earries them to the. hopper et' the conveyer B-l,

1,nss,117

Having describedA my invention, what l' claim as new, and desire to secure by Letters Patent, 1s:

separator, comprising a rotary sieve composed of connected concentric hollow inf tei-sliced cylinders, mounted onl a rotary shalt, means for delivering unseparated fragments ot materials et' different. sizes into the innercylinder only, means for separating the delivery-end of thc inner cylinder 'from the delivery-end of the outer cylinder1 a rotary-fan adapted to create a suction in the. vicini!) o1' the ,inlet-ends ot' said cylinders yto draw otl' light chati'y particles of said materials, another rotary-fan located in the vieinityof the delivery-ends of saiddrums and adapted to create a suction to aid in propelling' the largestparticles of the material ont of the inner drum, a movable conveyer adapted to receive only from the. delivery-end of the inner drum, another movable` conveyer adapted to receive from the periphery and delivery-end oi' said outer drum only, a third .movable conveyer adapted to receive from the delivery-end of said `sei-oral eonveyer only. .and driving-means connected with all said moving` parts adapted to actuate them all at the same determined ratesof speed cope -ati.vely.

' Signed at lat/erbe, loWa, this 27th day ofNov. 1912.n

, FRANK L. WALTER. titnessesz lV. H. Bronx,

(l ico. (l. KENNEDY. 

